SOLUTION: A rectangular airport runway is x feet long and y feet wide. If its length is to be made 100 feet longer, by how many square feet will its area be increased?
(A) xy + 100y (
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-> SOLUTION: A rectangular airport runway is x feet long and y feet wide. If its length is to be made 100 feet longer, by how many square feet will its area be increased?
(A) xy + 100y (
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Question 272679: A rectangular airport runway is x feet long and y feet wide. If its length is to be made 100 feet longer, by how many square feet will its area be increased?
You can put this solution on YOUR website! A rectangular airport runway is x feet long and y feet wide. If its length is to be made 100 feet longer, by how many square feet will its area be increased?
(A) xy + 100y (B) xy + 100 (C) 100 ly (D) 100l (E) 100 y
The area of the present runawayis x*y
The length is increased by 100 feet.
so the length will be 100 +x
the area will be (100+x) *y
Increase in area will be (100+x)*y- xy
100y+xy -xy
=100y
